diff --git a/dial.go b/dial.go
index 18c9dd4..95a24c9 100644
--- a/dial.go
+++ b/dial.go
@@ -6,7 +6,9 @@ import "crypto/tls"
 import "github.com/quic-go/quic-go"
 
 // Dial opens a connection to a server. The network must be one of "quic",
-// "quic4", (IPv4-only) "quic6" (IPv6-only), or "unix".
+// "quic4", (IPv4-only) "quic6" (IPv6-only), or "unix". For now, "quic4" and
+// "quic6" don't do anything as the quic-go package doesn't seem to support this
+// behavior.
 func Dial(ctx context.Context, network, address string) (Conn, error) {
 	return (Dialer { }).Dial(ctx, network, address)
 }
@@ -17,7 +19,9 @@ type Dialer struct {
 }
 
 // Dial opens a connection to a server. The network must be one of "quic",
-// "quic4", (IPv4-only) "quic6" (IPv6-only), or "unix".
+// "quic4", (IPv4-only) "quic6" (IPv6-only), or "unix". For now, "quic4" and
+// "quic6" don't do anything as the quic-go package doesn't seem to support this
+// behavior.
 func (diale Dialer) Dial(ctx context.Context, network, address string) (Conn, error) {
 	switch network {
 	case "quic", "quic4", "quic6": return diale.dialQUIC(ctx, network, address)